Free tools
Free tools for AI crawlers, attribution and webhooks
Each one is built on code NumberHill runs in production: the table that keeps 49 AI crawlers out of your visitor counts, the rules that turn a landing URL into a channel, the verifiers behind its payment webhooks. No sign-up, no email, nothing stored.
AI Crawler Directory
Who is crawling your site, what it feeds, and how to allow or block each one.
Open toolAI Bot User-Agent Checker
Paste a user-agent string. Learn instantly whether it is an AI bot, a scraper or a person.
Open toolrobots.txt Generator for AI Crawlers
Choose the AI crawlers to block and copy a ready-made robots.txt.
Open toolWebhook Signature Verifier
Paste headers, body and secret. See the signed content and both digests side by side.
Open toolUTM Builder & Click-ID Decoder
Compose a tagged link, or decode one, and see the channel it will be credited to.
Open toolWebsite Analytics Detector
Enter a URL and list the analytics, pixels, replay and consent scripts it runs.
Open tool
Something missing from the crawler list? Email [email protected] with the user-agent string and a link to the operator's documentation and it will be added.